LD 4 Panel Notes:

DME Audio 1 available at panel audio jack.

DME 40 / 42 Self-Test use LD 4 Test switch.

DME 40 Standby use LD 4 Standby switch.

DME 40 / 42 DME Flag connected to LD 4 TS 2 on back on panel (terminal 2)

DME 40 / 42 Analog output low connected to LD 4 TS 2 (terminal 5)

DME 40 / 42 Analog output Hi connected to LD 4 TS 2 (terminal 6)

   
NOTES for LD8009A
This harness is modified to run the DME 42 with an IND 42 indicator. It will also run the DME 40 with an 339F-4 indicator. It tunes both units using the 2 out of 5 parallel code. Also provided is access to input CSDB serial control from a CSDB bus simulator or from a CTL-32 through a DE-9S connector on the cable accessory box. Customer can make interconnecting cable with the following pin identification.
DME 42DE-9SCTL-32Descirption
551RSerial Control 1B
54 2 SSerial Control 1A
3 t 28VDC
4 r  28VDC 
5 s Power Ground
6 q Lamp Ground
7 A 5VDC input for Lamps

  

While the DME 42 runs with IND 42 indicator it can also operate the 339F-4.

INDICATOR NOTES:

339F-12

When using the frequency hold function use the LD panel switches Range Override and Standby Override in the ON position to place the unit under test in the normal Frequency Selection Mode. To place the unit in the frequency Hold Mode position the Standby Override switch in the OFF position.

339F-12A/12B/12C

When using the frequency hold function use the LD panel switches Range Override and Standby Override in the ON position to place the unit under test in the normal Frequency Selection Mode. To place the unit in the frequency Hold Mode position the Range Override switch in the OFF position.

339F-12A/12C Only the Nav 1 Frequency Selection is connected, Nav 2 is not selectable.

DME 42
When using the frequency hold function use the LD panel switches Range Override and Standby Override in the ON position to place the unit under test in the normal Frequency Selection Mode. To place the unit in the frequency Hold Mode position the Standby Override switch in the OFF position.

 

 

 

 

 

Accessory Box Switches apply only to the DME 42.  The following list the switches and tip jack use.
Switch IDFunction

P1-9

Selected - 6-wire, 40-mv/nmi, and DME flag output from channel 2    Unselected - signals from channel 1
P1-48 , P1-50 P1-48 Selected and P1-50 NOT selected - Serial tuning of channel 1
P1-48 and P1-50 NOT selected - 2 x 5 tuning of channel 1
P1-50 Selected and P1-48 NOT selected - 2 x 5 tuning of channel 2
P1-48 and P1-50 Selected - 2 x 5 tuning of channel 3
For DME-42 -001, channels 2 and 3 are tuned only via serial tuning
For DME-42 -003, channel 1, 2, or 3 maybe tuned via 2 x 5
P1-11 Selected - Channel 3 display IND 42A enabled: channel 1, 2, and 3 display selectable.
P1-19 Selected - Channel 2 displayed upon initial power up IND 42A
Selected - Displays only Channel 2 data IND 42C
P1-20 Selected - Sets range display IND 42 to read out .01 nmi.
Tip Jacks
1A, 1B IN Serial Control from CTL 32 to DME 42
1A, 1B OUT DME Serial Data from DME 42 to IND 42
5V IN Input 5VDC power to light lamps in IND 42 and CTL 32
GND Ground connection.
 
  Avionics Test Equipment Panels and Cables for bench testing of Aircraft Radio, Navigation, Audio Controllers, Radar and more. Linaire Engineering Inc.
Last modified: June 15, 2004